Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

4
On any node, run the following command to start the vxfenswap utility:
# vxfenswap -g vxfencoorddg [-n]
5
Verify that the keys are atomically placed on the coordinator disks.
# vxfenadm -s all -f /etc/vxfentab
Device Name: /dev/vx/rdmp/c1t1d0
Total Number of Keys: 4
...
Enabling or disabling the preferred fencing policy
You can enable or disable the preferred fencing feature for your I/O fencing
configuration.
You can enable preferred fencing to use system-based race policy or group-based
race policy. If you disable preferred fencing, the I/O fencing configuration uses
the default count-based race policy.
See “About preferred fencing” on page 47.
See “How preferred fencing works” on page 48.
To enable preferred fencing for the I/O fencing configuration
1
Make sure that the cluster is running with I/O fencing set up.
# vxfenadm -d
2
Make sure that the cluster-level attribute UseFence has the value set to SCSI3.
# haclus -value UseFence
3
To enable system-based race policy, perform the following steps:
■ Make the VCS configuration writable.
# haconf -makerw
■ Set the value of the cluster-level attribute PreferredFencingPolicy as
System.
# haclus -modify PreferredFencingPolicy System
131Administering SF Oracle RAC and its components
Administering I/O fencing